devcam test: run devcam hook pre-commit

Instead of the old ./misc/pre-commit.githook
Also fix devcam hook pre-commit so we don't show the override message in
that case.

Change-Id: I390016765056b9c4d3331d12bef8f2581e5621df

dev/devcam/hook.go

@@ -112,7 +112,9 @@ func (c *hookCmd) RunCommand(args []string) error {
 	switch args[0] {
 	case "pre-commit":
 		if err := c.hookPreCommit(args[1:]); err != nil {
-			printf("You can override these checks with 'git commit --no-verify'\n")
+			if !(len(args) > 1 && args[1] == "test") {
+				printf("You can override these checks with 'git commit --no-verify'\n")
+			}
 			cmdmain.ExitWithFailure = true
 			return err
 		}

dev/devcam/test.go

@@ -45,7 +45,7 @@ func init() {
 	cmdmain.RegisterCommand("test", func(flags *flag.FlagSet) cmdmain.CommandRunner {
 		cmd := new(testCmd)
 		flags.BoolVar(&cmd.short, "short", false, "Use '-short' with go test.")
-		flags.BoolVar(&cmd.precommit, "precommit", true, "Run misc/pre-commit.githook as part of tests.")
+		flags.BoolVar(&cmd.precommit, "precommit", true, "Run the pre-commit githook as part of tests.")
 		flags.BoolVar(&cmd.verbose, "v", false, "Use '-v' (for verbose) with go test.")
 		flags.StringVar(&cmd.run, "run", "", "Use '-run' with go test.")
 		return cmd
@@ -158,7 +158,7 @@ func (c *testCmd) runTests(args []string) error {
 }
 
 func (c *testCmd) runPrecommitHook() error {
-	out, err := exec.Command(filepath.FromSlash("./misc/pre-commit.githook"), "test").CombinedOutput()
+	out, err := exec.Command(filepath.FromSlash("./bin/devcam"), "hook", "pre-commit", "test").CombinedOutput()
 	if err != nil {
 		fmt.Println(string(out))
 	}